Add week1; update .gitignore

Author: Ali Bozorgzadeh

.gitignore

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+# ignore emacs's backup files
+*~

week1/bank/bank.py

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+# $0  : hello, hello there, ...
+# $20 : hey, hey there, ...
+# $100: not starting with h
+
+# Resources: https://docs.python.org/3.10/library/stdtypes.html#str.startswith
+
+
+def main():
+    # Prompt the user for greeting
+    greeting = input("Greeting: ").lstrip().lower()
+
+    # Evaluate the user's input
+    print("$", greet_eval(greeting), sep='')
+
+
+def greet_eval(str) -> int:
+    if str.startswith('h'):
+        if str.startswith("hello"):
+            return 0
+        return 20
+    else:
+        return 100
+
+
+main()

week1/bank/check.sh

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+#!/bin/sh -e
+
+check50 --local cs50/problems/2022/python/bank

week1/deep/check.sh

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+#!/bin/sh -e
+
+check50 --local cs50/problems/2022/python/deep

week1/deep/deep.py

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+# Let the user know if they know the "meaning of life, universe and
+# everything"!
+
+
+def main():
+    # Prompt user for meaning of life
+    mof = input("Meaning of Life: ").lower().strip()
+
+    # Respond to user's answer
+    if mof == "42" or mof == "forty-two" or mof == "forty two":
+        print("Yes")
+    else:
+        print("No")
+
+
+main()

week1/extensions/check.sh

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+#!/bin/sh -e
+
+check50 --local cs50/problems/2022/python/extensions

week1/extensions/extensions.py

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+# A program that prompts the user for the name of a file and then
+# outputs that file's media type.
+
+# Resources: https://docs.python.org/3.10/library/stdtypes.html#str.endswith
+
+
+def main():
+    # Ask the user for file name
+    filename = input("File: ").strip()
+
+    # Determine the MIME type
+    print(mime_type(filename))
+
+
+def mime_type(filename: str) -> str:
+    fn_lower = filename.lower()
+
+    if fn_lower.endswith(".gif"):
+        return "image/gif"
+    elif fn_lower.endswith((".jpg", ".jpeg")):
+        return "image/jpeg"
+    elif fn_lower.endswith(".png"):
+        return "image/png"
+    elif fn_lower.endswith(".pdf"):
+        return "application/pdf"
+    elif fn_lower.endswith(".txt"):
+        return "text/plain"
+    elif fn_lower.endswith(".zip"):
+        return "application/zip"
+    else:
+        return "application/octet-stream"
+
+
+main()

week1/interpreter/check.sh

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+#!/bin/sh -e
+
+check50 --local cs50/problems/2022/python/interpreter

week1/interpreter/interpreter.py

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+# Math interpreter
+
+
+
+def main():
+    statement = input("> ")
+    print(intrprt(statement))
+
+
+def intrprt(statement: str) -> int:
+    lhs, op, rhs = statement.strip().split()
+
+    if op == "+":
+        return float(lhs) + float(rhs)
+    elif op == "-":
+        return float(lhs) - float(rhs)
+    elif op == "/":
+        return float(lhs) / float(rhs)
+    elif op == "*":
+        return float(lhs) * float(rhs)
+    else:
+        return None
+
+
+main()

week1/meal/check.sh

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+#!/bin/sh -e
+
+check50 --local cs50/problems/2022/python/meal

week1/meal/meal.py

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+# Meal Time:
+#
+# Notify's the user whether they need to eat in the given time of the day
+
+
+
+def main():
+    # Prompt the user for time
+    time = input("Time: ").strip()
+
+    # Get the numerical 24 hours value of the time
+    time = convert(time)
+
+    # Notify the user
+    if convert("7:00") <= time <= convert("8:00"):
+        print("breakfast time")
+    elif convert("12:00") <= time <= convert("13:00"):
+        print("lunch time")
+    elif convert("18:00") <= time <= convert("19:00"):
+        print("dinner time")
+
+
+def convert(time: str) -> float:
+    """
+    converts time into a numerical value in 24-hour times
+
+    example: 13:30 --> 13.5
+    """
+
+    hours, minutes = time.split(':')
+
+    # There are 60 minutes in 1 hour
+    return float(hours) + (float(minutes) / 60)
+
+
+main()

week1/meal/meal_12hr.py

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+# Meal Time:
+#
+# Notify's the user whether they need to eat in the given time of the day
+#
+# This version supports 12-hour times too
+
+
+def main():
+    # Prompt the user for time
+    time = input("Time: ").strip()
+
+    # Get the numerical 24 hours value of the time
+    time = convert(time)
+
+    # Notify the user
+    if convert("7:00") <= time <= convert("8:00"):
+        print("breakfast time")
+    elif convert("12:00") <= time <= convert("13:00"):
+        print("lunch time")
+    elif convert("18:00") <= time <= convert("19:00"):
+        print("dinner time")
+
+
+def convert(time: str) -> float:
+    """
+    converts time into a numerical value in 24-hour times
+    example: 13:30 -> 13.5
+    example: 12:30 a.m. -> 0.5
+    example: 12:30 p.m. -> 12.5
+    """
+
+    time = time.strip()
+
+    # 24-hour times
+    if not is12hr(time):
+        hours, minutes = time.split(':')
+        return float(hours) + (float(minutes) / 60)
+
+    # 12-hours times
+    time, format = time.split()
+    hours, minutes = time.split(':')
+    hourse = float(hours)
+    minutes = float(minutes)
+
+    if format == "p.m.":
+        if hours == 12:
+            return 12 + (minutes / 60)
+        else:
+            return 12 + hours + (minutes / 60)
+    else:
+        if hours == 12:
+            return minutes / 60
+        else:
+            return hours + (minutes / 60)
+
+
+def is12hr(time: str) -> bool:
+    if time.find("a.m.") != -1 or time.find("p.m") != -1:
+        return True
+
+
+main()